The reason why an egg texture when heated is because : Proteins lose their shape and become insoluble
This occurrence is commonly known as denaturation, which caused the bond that bind the amino acid to break during the heating process and form another bond.<span />
When continents move apart, rifting occurs which produces cracks and new rock formations. Accretion occurs when faults strike each other forming layers of earth to stack on top of another. This creates mountains, hills and other land formations.
There could be many answers to this question, but a possible one is embryo!!
I think you are right. B is the right answer.